Palladium(II) fluoride

Palladium(II) fluoride, also known as palladium difluoride, is the chemical compound of palladium and fluorine with the formula PdF2.

Palladium(II) fluoride
unit cell of the crystal structure of palladium(II) fluoride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.249
EC Number
  • 236-598-8
  • InChI=1S/2FH.Pd/h2*1H;/q;;+2/p-2 ☒N
    Key: BHZSLLSDZFAPFH-UHFFFAOYSA-L ☒N
  • InChI=1/2FH.Pd/h2*1H;/q;;+2/p-2
    Key: BHZSLLSDZFAPFH-NUQVWONBAA
  • F[Pd]F
Properties
F2Pd
Molar mass 144.42 g·mol−1
Appearance pale violet crystalline solid; hygroscopic[1]
Density 5.76 g cm−3[1]
Melting point 952 °C (1,746 °F; 1,225 K)[1]
reacts with water
Structure
tetragonal
octahedral
Related compounds
Other anions
 Palladium(II) chloride
Palladium(II) bromide
Palladium(II) iodide
Other cations
 Nickel(II) fluoride
Platinum(II) fluoride
Platinum(IV) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Synthesis

PdF2 is prepared by refluxing palladium(II,IV) fluoride, PdII[PdIVF6], with selenium tetrafluoride, SeF4.

Pd[PdF6] + SeF4 → 2PdF2 + SeF6

Structure and paramagnetism

Like its lighter congener nickel(II) fluoride, PdF2 adopts a rutile-type crystal structure,[2][3] containing octahedrally coordinated palladium, which has the electronic configuration t6
2g e2
g. This configuration causes PdF2 to be paramagnetic[4] due to two unpaired electrons, one in each eg-symmetry orbital of palladium.

Applications

Palladium fluoride is an insoluble powder used in infrared optical sensors,[5] and in situations where reactivity to oxygen makes palladium oxide unsuitable.

See also

References
  1. CRC Handbook, 89th edition
  2. Bachmann, B.; Müller, B. G. (1993). "Einkristalluntersuchungen an Fluoroperowskiten MPdF3 (M = Rb, K) und PdF2". Z. Anorg. Allg. Chem. 619 (2): 387–391. doi:10.1002/zaac.19936190225.
  3. Holleman, A. F.; Wiberg, Egon; Wiberg, Nils (2001). Inorganic Chemistry. Web: Academic Press. p. 1515. ISBN 9780123526519. Retrieved 30 May 2020.
  4. Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1152–1153. ISBN 978-0-08-037941-8.
  5. "American_Elements.com".
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